公开(公告)号：US5351490A

公开(公告)日：1994-10-04

申请号：US10273

申请日：1993-01-28

申请人： Tatsuru Ohishi ,  Kazuki Niitsu ,  Hiroyuki Kiyota ,  Nobuo Fujii ,  Yoshihiro Katagishi ,  Takeshi Miyazawa

发明人： Tatsuru Ohishi ,  Kazuki Niitsu ,  Hiroyuki Kiyota ,  Nobuo Fujii ,  Yoshihiro Katagishi ,  Takeshi Miyazawa

IPC分类号： F04B35/04 ,  F25B9/14

CPC分类号： F25B9/14 ,  F04B35/045 ,  F25B2309/001

摘要： A cryogenic refrigerator comprises a compressor including a compressor housing within which a cylinder is mounted, and a piston reciprocal within the cylinder, and a cold finger including a low temperature cylinder within which a displacer is reciprocable, and a regenerater mounted within the displacer. A plurality of flat piston suspension springs include a plurality of spiral slits to provide a plurality of spiral arms deflectable as the piston is reciprocated within the compressor cylinder. A plurality of annular inner retainers are secured to the piston and adapted to sandwich the inner peripheral edges of the piston suspension springs. A plurality of annular outer retainers are secured to the compressor housing and include a plurality of projections extending inwardly from the outer ends of the spiral slits to sandwich the outer peripheral edges of the flat piston suspension springs.

摘要翻译： 低温冰箱包括压缩机，其包括压缩机壳体，其中安装有气缸，以及在所述气缸内往复运动的活塞，以及包括置换器可往复运动的低温气缸的冷指，以及安装在所述置换器内的再生器。 多个扁平活塞悬架弹簧包括多个螺旋狭缝，以在活塞在压缩机气缸内往复运动时提供可偏转的多个螺旋臂。 多个环形内保持器固定到活塞上并且适于夹住活塞悬架弹簧的内周边缘。 多个环形外保持器固定到压缩机壳体并且包括从螺旋狭缝的外端向内延伸的多个突起，以夹住平面活塞悬架弹簧的外周边缘。